I agree with Don. Rest your voice. You can cause serious damage by singing when your vocal cords are strained.
There are some styles that can cause you to "push" your voice to get get volume or a particular pop sound.
If you are pushing, STOP and learn to get volume with better breath support.
You can ruin your voice permanently.
Your voice will last a lifetime if you learn to protect it with good technique.

More info here:

http://www.gemmadenman.com/voicedoctor.htm

http://www.anthonywinter.com.au/singers/advancedtopics/vocalstrain


Hope this helps. - Alice